drivers/usb/host/ehci-pci.c

   1 /*-
   2  * Copyright (c) 2007-2008, Juniper Networks, Inc.
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation version 2 of
   8  * the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  18  * MA 02111-1307 USA
  19  */
  20
  21 #include <common.h>
  22 #include <errno.h>
  23 #include <pci.h>
  24 #include <usb.h>
  25
  26 #include "ehci.h"
  27
  28 #ifdef CONFIG_PCI_EHCI_DEVICE
  29 static struct pci_device_id ehci_pci_ids[] = {
  30         /* Please add supported PCI EHCI controller ids here */
  31         {0x1033, 0x00E0},       /* NEC */
  32         {0x10B9, 0x5239},       /* ULI1575 PCI EHCI module ids */
  33         {0x12D8, 0x400F},       /* Pericom */
  34         {0, 0}
  35 };
  36 #else
  37 #endif
  38
  39 /*
  40  * Create the appropriate control structures to manage
  41  * a new EHCI host controller.
  42  */
  43 int ehci_hcd_init(int index, enum usb_init_type init,
  44                 struct ehci_hccr **ret_hccr, struct ehci_hcor **ret_hcor)
  45 {
  46         pci_dev_t pdev;
  47         uint32_t cmd;
  48         struct ehci_hccr *hccr;
  49         struct ehci_hcor *hcor;
  50
  51 #ifdef CONFIG_PCI_EHCI_DEVICE
  52         pdev = pci_find_devices(ehci_pci_ids, CONFIG_PCI_EHCI_DEVICE);
  53 #else
  54         pdev = pci_find_class(PCI_CLASS_SERIAL_USB_EHCI, index);
  55 #endif
  56         if (pdev < 0) {
  57                 printf("EHCI host controller not found\n");
  58                 return -1;
  59         }
  60
  61         hccr = (struct ehci_hccr *)pci_map_bar(pdev,
  62                         PCI_BASE_ADDRESS_0, PCI_REGION_MEM);
  63         hcor = (struct ehci_hcor *)((uint32_t) hccr +
  64                         HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
  65
  66         debug("EHCI-PCI init hccr 0x%x and hcor 0x%x hc_length %d\n",
  67                         (uint32_t)hccr, (uint32_t)hcor,
  68                         (uint32_t)HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
  69
  70         *ret_hccr = hccr;
  71         *ret_hcor = hcor;
  72
  73         /* enable busmaster */
  74         pci_read_config_dword(pdev, PCI_COMMAND, &cmd);
  75         cmd |= PCI_COMMAND_MASTER;
  76         pci_write_config_dword(pdev, PCI_COMMAND, cmd);
  77         return 0;
  78 }
  79
  80 /*
  81  * Destroy the appropriate control structures corresponding
  82  * the the EHCI host controller.
  83  */
  84 int ehci_hcd_stop(int index)
  85 {
  86         return 0;
  87 }